Krugman predicts that political craziness, and by inference crazy Americans, will result in a Republican takeover of the House of Representatives and play chicken with the federal budget. Chicken with the budget is precisely what Defundit.org has called for. Already they've obtained the pledges of 165 congressional candidates not to fund any part of Obamacare.
While America's liberal elite have not reached the depths of tyrants such as Lenin, Stalin, Mao and Hitler, they share a common vision and, as such, differ only in degree but not kind. Both denounce free markets and voluntary exchange. They are for control and coercion by the state. They believe they have superior wisdom to the masses and they have been ordained to forcibly impose that wisdom on the rest of us. They, like any other tyrant, have what they see as good reasons for restricting the freedom of others.
Their agenda calls for the elimination or attenuation of the market. Why? Free markets imply voluntary exchange. Tyrants do not trust that people behaving voluntarily will do what the tyrants think they should do. Therefore, they seek to replace the market with economic planning control and regulation.
Why liberalism has become an ugly sight, as Krauthammer claims, is because more and more Americans have wised up to their agenda.